How many amps will a 15000 btu ac unit pull at start up and how many to run a honda eu2000i generator would be to small for a 15000 btu rv ac unit

The internal monitor is sensing a load does a load make it change tone? Check the 12 v output and see if it is loaded.

Kevin H

Make sure it isn't trying to start the HVAC with a locked compressor (IE it just turned off and is now trying to cycle on again) If it is shutting down due to low freq there is too much load for the HP the engine can deliver. That will cause too much current to flow and trip the breaker. Also be aware it takes 6 times current to start HVAC than to run it. How old is the generator? it may have normal engine wear and can no longer generate HP, Also when was it tunes up

Check the condensor unit. May be dusty. Clean it. If still problem replace capacitor.

According to specs, they will take a 44 amp AC power surge. Obviously number and type of batteries as well as battery condition , etc, plugged in, not plugged in to outside hydro, or generator all come in to play here, but a 15,000 BTU roof AC will only draw, 15-17Amps AC when compressor kicking in, ( or less on some new models) and should level out at 12 -13 amp draw after. As well, this will depend on proper wiring to and from main panel as well as AC unit, and incoming voltage, AC unit condition ( cleaned and maintained properly) etc.

Hello, I have the same exact generator, 2400 Yamaha. It works fine for my Ac, and then some. After it first kicks on, is the biggest surge. Then I have even after ac is running, I have had tv on and even used microwave. But as far as running you ac on your rv , not problem. I do it all the time. Mine is ulta quite, and 8 to ten hours run time on about a gallon of fuel. Mike

For an RV 15000 BTU air conditioner the size being maximum for 115 volts ac you will need to have a independent circuit breaker for it only and rated at 20 amps. The average amps depends on serveral factors like actual supply voltage somtimes 110 to 120 volts and wire size and length feeding the air conditioner. To answer your question the average Amps will be near 13 Amps. Click Here=>

Dometic RV Air Conditioner Installation Manual and Specifications
Click here for a photo of the Electrical Spects.=>

Dometic_RV_Air_Conditioner_Electrical_Specifications
If you have any questions I will be here to answer them for you, Thanks, Sea Breeze

If it's the pencil type, it just pokes into the fins (carefully)
If you look real close with flashlight you should be able to see where it poked in before, usually a couple of inches up from bottom. If it's the little round disc, it snaps in down in bottom corner, there should be a small hole for it in the frame.

hi,you might need a new compressor...you will need need to go back were you bought capacitor...buy a hard start capacitor too..this might crank the compressor...hope this helps.if you buy it..call an ill tell you how to wire it...if it dont ,you need new compressor...call michael..doctor airr..appl.repair...843-384-8474...

Yes - it will be a fine machine to have and do well.


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Look for a small fuse somewhere in the control panel. Usually a blade type (car) fuse 3 to 5 amp. Chack to see if its blown. If you have no fuse, or its NOT blown. Check to see if you have voltage comming out of, and going into the transformer.

Thsi is where you would START to diagnose the problem. Check this and we can go further.